Add new testcase for broken indvars case

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3642 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/IndVarsSimplify/2002-09-09-PointerIndVar.ll

@@ -0,0 +1,16 @@
+; Induction variable pass is doing bad things with pointer induction vars, 
+; trying to do arithmetic on them directly.
+;
+; RUN: as < %s | opt -indvars
+;
+void %test(int %A, uint %S, sbyte* %S) {
+
+	br label %Loop
+Loop:
+	%PIV = phi sbyte* [%S, %0], [%PIVNext, %Loop]
+
+	%PIV = cast sbyte* %PIV to ulong
+	%PIVNext = add ulong %PIV, 8
+	%PIVNext = cast ulong %PIVNext to sbyte*
+	br label %Loop
+}

test/Transforms/IndVarsSimplify/Makefile

@@ -0,0 +1,10 @@
+
+LEVEL = ../../../..
+include $(LEVEL)/test/Makefile.tests
+
+TESTS := $(wildcard *.ll)
+
+all:: $(addprefix Output/, $(TESTS:%.ll=%.ll.out))
+
+Output/%.ll.out: %.ll Output/.dir $(LOPT)
+	-$(TESTRUNR) $<